Time on boards
- Boards served
- 4
- Current seats
- 4
- Board service
- 11 years
- Director since
- 2023
11 years of board service in total across 4 boards, counting each seat separately. Longest: MACOM Technology Solutions Holdings Inc., 3 years.
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
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QuantumScape Corporation June 3, 202699.7%
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Everspin Technologies Inc. May 21, 202695.7%
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MACOM Technology Solutions Holdings Inc. March 5, 202698.0%
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Everspin Technologies Inc. May 22, 202588.4%
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Acacia Research Corporation (Acacia Tech) May 15, 202593.8%
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MACOM Technology Solutions Holdings Inc. March 6, 202597.6%
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Everspin Technologies Inc. May 23, 202495.7%
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Acacia Research Corporation (Acacia Tech) May 21, 202495.2%
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Everspin Technologies Inc. May 23, 202399.0%
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Acacia Research Corporation (Acacia Tech) May 16, 202397.4%
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Jun 3, 2026 | QuantumScape Corporation | Grant or award | +24,183 | — | — |
| May 21, 2026 | Everspin Technologies Inc. | Grant or award | +3,852 | — | — |
| May 20, 2026 | Everspin Technologies Inc. | Open-market sale | −27,488 | $28.87 | $793,579 |
| May 11, 2026 | MACOM Technology Solutions Holdings Inc. | Open-market sale | −1,623 | $361.84 | $587,266 |
| Mar 6, 2026 | MACOM Technology Solutions Holdings Inc. | Grant or award | +776 | — | — |
| Feb 25, 2026 | MACOM Technology Solutions Holdings Inc. | Open-market sale | −2,244 | $253.59 | $569,056 |
| Jan 29, 2026 | QuantumScape Corporation | Grant or award | +29,878 | — | — |
| Jan 29, 2026 | QuantumScape Corporation | Grant or award | +6,224 | — | — |
| May 30, 2025 | Acacia Research Corporation (Acacia Tech) | Grant or award | +32,172 | — | — |
| May 22, 2025 | Everspin Technologies Inc. | Grant or award | +20,325 | — | — |
| Mar 7, 2025 | MACOM Technology Solutions Holdings Inc. | Grant or award | +1,623 | — | — |
| Feb 12, 2025 | MACOM Technology Solutions Holdings Inc. | Open-market sale | −6,656 | $121.61 | $809,436 |
| Jun 7, 2024 | Acacia Research Corporation (Acacia Tech) | Grant or award | +23,121 | — | — |
| May 23, 2024 | Everspin Technologies Inc. | Grant or award | +20,973 | — | — |
| May 7, 2024 | MACOM Technology Solutions Holdings Inc. | Open-market sale | −3,500 | $103.84 | $363,440 |
Questions about Geoffrey G. Ribar
What boards is Geoffrey G. Ribar on?
Geoffrey G. Ribar sits on the boards of Acacia Research Corporation (Acacia Tech), Everspin Technologies Inc., MACOM Technology Solutions Holdings Inc. and QuantumScape Corporation.
How long has Geoffrey G. Ribar served on boards?
Our records show at least 11 years of board service across 4 boards, the earliest from 2023.
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